Lady Gaga performs with 10-year-old YouTube fan

Lady Gaga has performed with
YouTube singing sensation
Maria Aragon, the ten-year-old whose
Born This Way cover impressed her so much she requested a duet.

Gaga invited Maria to join her on stage during a sold-out concert in Toronto, Canada, on Thursday night.

Around an hour into the show, Winnipeg native Maria appeared before the crowd, wearing shiny black trousers and jacket, a pink hoodie and a white hat.

‘I’m really excited that Maria is here today, because Maria represents what this song is all about,’ Gaga told the audience.

‘It’s all about the next generation and the future and no more divisiveness,’ she added, referring to Born This Way.

Maria played the piano keys and Gaga worked its pedals for the duet

Labelling her young fan ‘Lady Maria from Winnipeg’, the Poker Face chanteuse perched her on her lap at the piano as they belted out their rendition of the much-hyped single .

The 24-year-old was in tears after the young performer left the stage.

Maria thanked her family and friends for their support before leaving: ‘I’m just really grateful to all of you.’

She joined her idol again for the show’s encore, busting out some moves she revealed afterwards to be totally spontaneous: ‘She got me all pumped up and she made me so comfortable so I just started dancing. It was for the crowd.’

Maria became the web sensation du jour last month when she posted a video of herself singing and playing keyboard to Born This Way on YouTube.

‘Can’t stop crying watching this. This is why I make music. She is the future,’ tweeted Gaga of the video, which she shared with her many Twitter followers.